baber/WOPTO huggingface dataset:
Patent GB-1477512-A (GB)
Title: Methods of manufacturing semiconductor devices
IPC: H01L21/336
Filed: 1974-05-21
Abstract: 1477512 Semiconductor devices MULLAR Ltd 21 May 1974 Divided out of 1477511 06031/77 Heading H1K A method of making a semiconductor device comprises providing on a semiconductor body or layer an insulating layer, and superposed thereon a layer of relatively high resistivity polycrystalline silicon, and a masking layer, defining beneath the masking layer a narrow strip of relatively low resistivity by effecting one or more diffusions of doping materials laterally beneath an edge portion of the masking layer, removing the masking layer, and etching selectively to remove either the narrow region or the parts of the polysilicon layer bounding it. In one embodiment, using silicon nitride as masking material, an aperture is formed in the nitride and phosphorous and boron successively diffused through it to form between the diffusion fronts an N<SP>+</SP> strip 1Á wide underlying the nitride. After removing the nitride in hot phosphoric acid the N<SP>+</SP> strip is etched away selectively in a specified etchant. The remaining embodiments are also described in U.K. application 22583/74, from which the subject matter of the present specification was divided.
Patent GB-720781-A (GB)
Title: Improvements in differential measuring and indicating systems
IPC: G01D5/04
Filed: 1953-03-04
Abstract: 720,781. Linkwork. LANDIS & GYR AKT.- GES. March 4, 1953 [March 5, 1952]. No. 6049/53. Class 80 (3). [Also in Group XIX]. Linkwork for transmitting movement from tubular bellows 1 to drums 8 comprises flexible strips 5 of thin metal wrapped around and secured to each drum 8. Means for varying the transmission ratios are provided by forming each drum with slits 8 and arranging in its funnelshaped end 9 a conical spreader 11 fixed to a spindle 10 movable axially in the base 7 of the drum but prevented from rotation by a transverse pin 12. A compression spring 16 is inserted between the pin 12 and base 7 so that by adjusting a nut 14 on a threaded part 13 of the spindle the spreader 11 can be moved in or out of the opening 9 to regulate the circumference of the drum and so vary the transmission ratio. With a funnelshaped end 9 the spreader may be of disc form, while if a conical spreader is used the funnellike shaping of the end of the drum is unnecessary.
Patent GB-1410142-A (GB)
Title: Method of producing bubble-free and oh-group free transparent fused silica and apparatus for putting the method into effect
IPC: C03C3/06
Filed: 1973-02-07
Abstract: 1410142 Transparent fuzed silica HERAEUSSCHOTT QUARZSCHMELZE GmbH 7 Feb 1973 [7 Feb 1972] 6090/73 Heading C1M A method of producing substantially bubblefree and substantially OH-group-free (i.e. having an OH-group content of less than 5 p.p.m.) transparent fuzed silica from granular rock crystal with an OH-group content consists in doping the granular rock crystal with a salt, the cation of which is lithium, sodium, potassium, magnesium, calcium, strontium or silver and which has a vapour pressure at temperatures ranging from 800‹ to 1700‹ C. of at least 5 mm Hg, or with a mixture of such salts, present in an amount at least sufficient for the stoichiometric reaction with the OH groups present in the rock crystal, rotating the doped granular rock crystal for a period of at least 30 seconds in a reaction chamber which has been heated to 800-1700‹ C. and of which the atmosphere is enriched with vapour of the doping salt, scavenging the granular rock crystal which has been rotated with a gas free from water vapour, e.g. oxygen or nitrogen at 800-1700‹ C., and thereafter melting the gas-scavenged granular rock crystal in a melting furnace in an atmosphere free from water vapour. Especially suitable. doping salts are sodium fluoride, sodium chloride, sodium bromide, sodium nitrate, lithium chloride, potassium chloride, magnesium chloride, calcium chloride, strontium chloride, silver nitrate or mixtures thereof. The granular rock crystal may be mixed with said salt prior to being introduced into said reaction chamber after which it is dried at a temperature of less than 500‹ C. Alternatively part of the rock crystal to be used is mixed with the solution containing the whole of the salt to be used, the thus treated crystal dried and then admixed with the remainder of the rock to be used before being introduced into the reaction chamber. The rotation of the doped rock crystal and the subsequent gas scavenging may be carried out at 900-1400‹ C. The gas scavenging is advantageously carried out on the countercurrent principle. An apparatus for producing the granular rock crystal is also disclosed (Fig. 2) and this comprises a rotatable sloping cylindrical tube of fuzed silica, heating means surrounding the upper portion of said tube, a dividing wall within the upper portion of said tube, said wall having a substantially axially disposed aperture therein for the discharge of treated rock crystal therethrough, means for introducing dry gas into the lower end of the tube, means for withdrawing gas from the upper portion of said tube below said apertured dividing wall and means for delivering treated rock crystal in dry condition from the lower end of said rotatable tube into a receptacle therefor.
Patent GB-916580-A (GB)
Title: Improvements in leg assemblies for foldable chairs, tables, ironing boards and the like
Inventor: CLIFTON LEONARD PHILLIP
IPC: A47B3/02
Filed: 1960-02-22
Abstract: 916,580. Furniture underframes. VALOR CO. Ltd. Feb. 21, 1961 [Feb. 22, 1960], No. 6156/60. Class 52 (3). Both sides of two rectangular or U- shaped frames are sprung into pivotal connection with one another by means of pivot pins fixed to one frame and capable of providing a clearance between the frames. The X-form under-frame which is thus produced may be attached to a table top to make an ironing board (Fig. 1, not shown) or may be used to make a stool or chair. Pin 13 is brazed at 14 to tubular leg 8 and has a rounded end 16 which is resiliently urged against the inner wall. of tubular leg 6 to maintain the spacing between the legs. Pivot pins with base-plates for attachment to wooden legs and pins having shouldered portions to hold the legs apart are referred to.
Patent GB-544604-A (GB)
Title: Improvements in doubled headed matches
IPC: C06F5/00
Filed: 1941-05-13
Abstract: 544,604. Matches. KAUFMAN, I. May 13, 1941, No. 6163. [Class 50] A central part of a double-headed match is made fire resisting by the application of a fire resisting paint containing asbestos, or of a liquid such as a solution of ammonium phosphate, sodium tungstate, phosphate, or silicate or of borax. Alternatively, asbestos paper or cord may be bound on to the match. Reference has been directed by the Comptroller to Specification 545,035.
Patent GB-1091561-A (GB)
Title: Electrical assemblies
Inventor: MCCOLL JOHN DUNCAN
IPC: H01L23/488
Filed: 1963-02-15
Abstract: 1,091,561. Semi-conductor devices. ENGLISH ELECTRIC CO. Ltd. May 13, 1964 [Feb. 15, 1963], No. 6173/63. Heading H1K. A heat sink for a semi-conductor device such as a silicon power diode comprises an aluminium member having a thin layer of solderable metal metallurgically bonded to one surface thereof, the device being soldered to this layer in good thermal and electrical contact therewith. The metal may be copper, silver or gold and may be pressure welded to the aluminium member or deposited thereon by spraying or electrolysis. Cooling fins may be provided on the aluminium member except in the region of the device.
Patent GB-735252-A (GB)
Title: Improvements in or relating to apparatus for comparing the instantaneous values of two voltages
IPC: H03K5/24
Filed: 1953-03-05
Abstract: 735,252. Pulse code modulation circuits; multistable-state circuits. GENERAL ELECTRIC CO., Ltd., and ELSON, D. W. March 5, 1954 [March 5, 1953], No. 6197/53. Classes 40 (5) and 40 (6). Relates to a circuit for comparing the instantaneous valves of two voltages to provide, for example, the slicer in a pulse coding apparatus as described in Specification 735,251. The slicer is required to determine the relative polarity of the voltages across condensers 1, 2 a number of times during a coding cycle. The condenser voltages are fed respectively to the grids 7, 8 of a pair of triodes 11, 12, having a short grid base and a common cathode resistance provided by a pentode 14. The valve 11 has an anode resistance 15 and its anode voltage depends on the relative polarity of and the voltage difference between the grids 7, 8, but is substantially independent of the actual voltage values. At the end of each coding cycle, valve 14 is rendered non-conducting by applying a negative bias to its suppressor grid terminal 22. The anode voltage of triode 11 forms a control voltage which determines the state of a two-state circuit comprising valves 28, 33, having a common cathode resistance 34 and a coupling between the anode 37 of valve 28 and grid 35 of valve 33 through a buffer cathode-follower valve 38. A fixed reference voltage is applied to the grid 35 from a potentiometer 36. The control voltage is fed through condenser 17 and cathode-follower valve 19 to the grid 27 of valve 28 and each time a comparison of the voltages on condensers 1, 2 is to be effected a negative interrogating pulse is applied to grid 27 from a transformer 32. This pulse cuts off valve 28 and then the value of the control voltage relative to the fixed voltage of grid 35 determines whether it remains cut off or becomes conducting to render valve 33 non-conducting. A balanced pulse output occurs at the anode terminal 47 of valve 33 and the cathode terminal 48 of valve 38, and the code pulse output is taken from terminal 49 also fed from said cathode. Specification 729,882 also is referred to.
Patent GB-901859-A (GB)
Title: Improvements in ball-point pens
Inventor: DIETRICH WILLIAM G
IPC: B43K24/08
Filed: 1959-02-23
Abstract: 901,859. Reservoir pens. VENUS PENCIL CO. Ltd. Feb. 23, 1959, No. 6238/59. Addition to 739,787. Class 146 (3). In a retractible ball-point pen wherein the writing unit 2 is urged inwardly of the barrel 1 by a spring 6, the unit 2 is projected when a plunger 12 is depressed, and a separate latch 17, which is slidably arranged between the plunger and dome-shaped plug 9 on the unit 2, is adapted to be rocked when it is opposite a slot 22 in the barrel to engage the slot and thus hold the unit 2 in writing position. The plunger 12 is slidable in a cap 11 fixed in the barrel 1, and has a domeshaped end bearing on the top 19 of the latch 17. The latch comprises a narrow L-shaped member provided with a cam-shaped edge 20 which engages the plug 9, and it is guided for longitudinal movement in a slot in a disc-like member extending across the barrel. The parent Specification is referred to.
Patent GB-571278-A (GB)
Title: Improvements in or relating to brake mechanism
IPC: B61H5/00
Filed: 1943-04-20
Abstract: 571,278. Vehicle brakes. BUDD WHEEL CO. April 20, 1943, No. 6317. Convention date, March 19, 1942. [Class 103 (i)] Brake shoes and actuating means therefor are mounted on railway trucks by a support extending transversely between side members of the truck and connected thereto by resilient joints, a further resilient connection being provided, if necessary, between the central part of the brake support and a transverse frame member. According to one construction, the brake is of the kind described in Specification 561,643, and comprising shoes 28, 29 applied to discs 21 secured to the wheel axle 17, by levers 24, 25 pivoted at 26, 27 within casings 23 which house brake cylinders by which the levers are operated, levers 29<1> for mechanical operation being also provided. The casings 23 form part of a brake support which includes also central and end parts 30, 33 to which the casings are bolted at 31, 32. This support is connected through rubber bushings 36, 37 and pivot bolts 45, 46 to extensions 41, 42 of seats 38 for the springs 18 by which the side frame members 12 of the truck are carried by equalizing bars 14 mounted on the axle-boxes 16. The spring-seats are positioned laterally on the bars 14 by flanges 43, 44. The resilient joints 36, 37, 45, 46 serve yieldingly to transmit the braking torque to the equalizing bars and also to permit relative vertical and tilting movement of the bars relatively to each other without imposing appreciable stresses on the brake support. By removal of the bolts 32, the part 30 with the brake mechanism can be removed from the truck. The Specification as open to inspection under Sect. 91 comprises also a modification in which the brake support has a single resilient connection 36, 45 with the spring seat 38 at each end and a third resilient connection between the middle part 30 and the transverse frame member 13, this resilient connection being constructed and arranged as described in Specification 561,643. This subject-matter does not appear in the Specification as accepted.
Patent GB-144786-A (GB)
Title: Improvements in submarine protecting device
IPC: B63G9/00
Filed: 1919-03-14
Abstract: 144,786. Trask, L. B. March 14, 1919. Torpedo nets and screens 8 are supported by a carrier 6 which is moved into the outboard position between the rails 3 as the outrigger frame 2 pivoted at 1 to the ship's side is lowered. The frame 6 is locked in the outboard position by a spring-pressed pin 23. This catch may be released by means of a cable 27. The outrigger frame is raised and the screen moved simultaneously into the inboard position by operating pulley drums 12, 13 to wind the cables passing sheaves 11 in a stanchion 10.
Patent GB-471427-A (GB)
Title: Improvements in electrically actuated valves
IPC: F16K31/06
Filed: 1936-03-03
Abstract: 471,427. Electromagnets. WEBB, A. B. March 3, 1936, No. 6435. [Class 35] [Also in Group XXIX] An electromagnet for operating a valve D, has a slidable armature G loaded by a blade spring F, which is mounted in a lateral extension A<1> of the valve casing A and is externally adjustable by means of a screw F3, having a lock nut F<4>. The magnet casing H which is of magnetically conductive metal has a top plate I and a bottom plate J, the latter having a shoulder G<4> fitting in the cavity containing the head G<2> of the armature. The plate J is secured by bolts or the like to the valve casing A which is of non-magnetic metal. The plate J, the magnet core K, and a non-magnetic ring M are preferably welded together. The blade spring F is mounted in a plug F<2> screwed into the extension A<1> and engages a notch F<1> in the armature stem.
Patent GB-382185-A (GB)
Title: Improvements in or relating to hose or like couplings
IPC: A47L9/24
Filed: 1932-03-03
Abstract: 382,185. Tube couplings. ELECTROLUX, Ltd., 153, Regent Street, London.- (Assignees of Inventia Patent- Verwertungs- Ges.; 10, Herrenacker, Schaffhausen, Switzerland.) March 3, 1932, No. 6441. Convention date, March 3, 1931. [Class 99 (i).] The adjacent ends of two tubes or tubular members, such as an extension or handle 19 of the suction hose of a vacuum cleaner and the mouthpiece 21 of a brush 22, are coupled by inserting one into the other and then securing them together by an external rubber &c. sleeve 20 which is provided with recesses or projections tightly engaging complementary constructions formed in one or both of said members. As shown in Fig. 2 the sleeve 20 is formed at one end with an internal groove 23 to receive a projection 24 on the member 21 and at the other end with internal projections 25 engaging recesses or slots in the handle 19. In a modification, Fig. 3, the groove is formed on the member 21 and the annular projection on the sleeve.
Patent GB-719874-A (GB)
Title: Improvements in or relating to the compounding of rubbery compositions
IPC: C08K5/49
Filed: 1952-03-12
Abstract: Dispersion of pigments, particularly carbon black, in rubbery compositions is facilitated by use of a reaction product of phosphorus sulphide and a hydrocarbon material, or a guanidine, guanidine derivative, amine or multi-valent metal salt of such a reaction product, e.g. P2S5-treated polyisobutylene of molecular weight 200-20,000 or the diorthotolyl or triphenyl-guanidine salt thereof, the guanidine salt or the aluminium, barium, tin, antimony, molybdenum, iron, cobalt or nickel salt of P2S5-treated hydrocarbon oil.  The amount of the dispersion aid may be 0.2 to 10 parts per 100 parts of the rubbery constituent, which may be a copolymer of an iso-olefine with a multi-olefine, e.g. of 97 per cent. of isobutylene with 3 per cent. of isoprene, copolymer of a di-olefine with a monoolefine, e.g. of 75 per cent. of butadiene with 25 per cent. of styrene or of butadiene with a methyl styrene or acrylonitrile, or may be polybutadiene, neoprene, or the neoprene copolymer of chloroprene and butadiene.ALSO:Dispersion of pigments, particularly carbon black, in rubbery compositions is facilitated by use of a reaction product of phosphorus sulphide and a hydrocarbon material, or a guanidine, guanidine derivative, amine or multi-valent metal salt of such a reaction product, e.g. P2S5-treated polyisobutylene of molecular weight 200-20,000 or the diorthotolyl guanidine or triphenyl-guanidine salt thereof, the guanidine salt or aluminium, barium, tin, antimony, molybdenum, iron, cobalt or nickel salt of P2S5-treated hydrocarbon oil.  The amount of the dispersion aid may be 0.2-10 parts per 100 parts of the rubbery p  constituent, which may be natural rubber, a butadiene-styrene copolymer, a butadiene-acrylonitrile copolymer, or a butadiene-chloroprene copolymer.
Patent GB-540300-A (GB)
Title: Improvements in or relating to methods of filling confined spaces associated with electric apparatus
IPC: H02G15/10
Filed: 1940-04-10
Abstract: 540,300. Transformers. STANDARD TELEPHONES & CABLES, Ltd., and LEE, E. C. April 10, 1940, No. 6471. [Class 38 (ii)] [Also in Group XXXVI]  The space surrounding a cable joint, transformer, or other electrical apparatus or surrounding the plates of a condenser in a casing is filled with plastic insulation by first introducing a liquid solvent for the plastic and then forcing in the plastic to displace the liquid. A barrier joint for high tension cable is built up by wrapping impregnated tape 6 over the joint 5 while basting with monomeric styrene as described in Specification 504,720, [Group XXXVI], covering the insulation with a layer of metal foil 8 bonded to the sheaths 9, 10 of the cables, lapping cotton tape 11 impregnated with rubber and polystyrene to seal the cable ends, and then filling the space 18 with monomeric styrene, methyl methacrylate, or benzene, and displacing this by forcing in polystyrene plasticized in accordance with Specification 490,814, [Group IV]. Another form of joint for multicore cables and an insulated cable termination are described. In each case a filler opening 17 and an outlet or outlets 15, 16 are provided. Another combination of plastic filling and liquid solvent is shellac used with methylated spirit.
Patent GB-643839-A (GB)
Title: Improvements in or relating to apparatus for testing amplifiers
Inventor: COOPER VICTOR JAMES
IPC: G01R27/30
Filed: 1949-03-09
Abstract: 643,839. Impedance networks. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 9, 1949, No. 6486. [Class 37] [Also in Group XL (b)] The output of a high-frequency modulated amplifier is analysed by applying it to a resonant line of high Q, e.g. a coaxial line 1, 2 which has a variable reactance, e.g. a condenser 5, 6 so as to vary the resonant frequency of the line ; a potentiometer 12, 13 is ganged with the condenser 5. 6 to provide a time base for a cathode-ray tube on which is exhibited the output of the line. The input to the line is applied to loop 10 and the output is taken from probe 11. A motor 7 continuously traverses the condenser 5, 6 and the potentiometer 12, 13 over their range.
Patent GB-1371405-A (GB)
Title: Rotary type impact printers
IPC: B41J9/44
Filed: 1972-02-11
Abstract: 1371405 Printers HONEYWELL INFORMATION SYSTEMS Inc 11 Feb 1972 [24 May 1971] 6549/72 Heading G4H In an impact printer, a line of characters to be printed is supplied to a first shift register from which they are reoirculated back into the first register via a second shift register, once for each possible type character as that character on a print drum approaches a row of print hammers spaced along the line, each character in the second shift register being compared with a count representing the drum position. Equality sets a flip-flop corresponding to the position in the line as indicated by a clock-driven counter. Each flip-flop controls a respective hammer.
Patent GB-683864-A (GB)
Title: New diastereoisomeric substituted propanes and propanes for their preparation
Filed: 1951-03-19
Abstract: The invention comprises the threo forms of 2 - dichloracetamido - 1 - p - nitrophenyl - 1 : 3 - dichloropropane, and the manufacture thereof by treating an erythro form of 2-chloromethyl-4-p - nitrophenylhydroxymethyl - D  2 - oxazoline with thionyl chloride under anhydrous conditions at a sufficiently high temperature to bring about replacement of the a -hydroxy group by chlorine (e.g. not below about 100 DEG  C.).  The products may also be made by (a) the action of hydrogen chloride under anhydrous conditions at elevated temperature on a threo form of 2 - dichloracetamido - 1 - p - nitrophenyl - 3 - chloropropane - 1 - o1 or of 2 - dichloroacetamido - 1 - p - nitrophenylpropane - 1 : 3 - diol or of 2 - dichloromethyl - 4 - p - nitrophenyl-hydroxymethyl - D  2 - oxazoline, or (b) refluxing an erythro 2-dichloracetamido-1-p-nitrophenyl-3-chloropropane-1-o1 with thionyl chloride under anhydrous conditions.  Examples illustrate the application of the various processes to the preparation of the DL-, D- and L-threo compounds.  Specification 698,566 is referred to.
Patent GB-1504082-A (GB)
Title: Electronic computers
IPC: G06F13/28
Filed: 1976-02-19
Abstract: 1504082 Data processing ING C OLIVETTI & C SpA 19 Feb 1976 [6 March 1975] 06620/76 Heading G5A The first character of each set of characters transferred from a disc unit 14 to a working memory 4 is transferred through a central processing unit 1, the remaining characters of the set not passing through the central processing unit 1. A multiplexer 8 selects for connection to a register 7 connected to memory 4 the output of a selector 9 connected to central processing unit 1 or the output of control logic 13 connected to the disc unit 14. Transfer of characters from the memory 4 to the disc unit 14 takes place through the central processing unit 1 via register 5, channels 18 and 20 and logic 13. In either direction of transfer the characters of each set are written into one of two alternately enabled buffers (83, 84, Fig. 4, not shown) in logic 13. Central processing unit 1 operates under the control of microinstructions from a memory 30a.  On encountering an input-output instruction in a program the central processing unit 1 loads into auxiliary registers 12 the initial transfer address in the working memory 4 and the number of blocks of data to be transferred and sends to logic 13 the necessary commands for positioning the magnetic head in disc unit 14 at the initial sector. When successive bursts of characters are transferred from the disc unit 14 to the working memory 4 the first character of each burst is transferred through central processing unit 1, the unit 1 preparing the address in working memory 4 for the first character in the next burst while the rest of the burst is transferred directly from disc unit 14 to working memory 4.
Patent GB-682977-A (GB)
Title: Improvements in or relating to footwear
IPC: A43B13/28
Filed: 1950-03-16
Abstract: 682,977. Detachable soles. GARZOLINI, J. E. Jan. 4, 1951 [March 16, 1950], No. 6648/50. Class 17 (ii). A heel and sole assemblage for detachable attachment to footwear 10 having an existing heel t has an upstanding flange 13 of deformable resilient material around the inner side of which near the top is an undercut recess 1 to engage a flange Sa carried by the sole and heel. The tread face of the sole and heel may be ribbed to prevent slipping and may be moulded in two sections to abut one another when in position at the throat of the shoe.